Re: [PATCH] Revert "ACPI: processor: idle: Only flush cache on entering C3"

[Ketsui]

I can confirm that this reversion fixes a very similar issue I have with kernel
5.17 (only difference is resume always fails on my desktop), here's the bisect
log:

# bad: [f443e374ae131c168a065ea1748feac6b2e76613] Linux 5.17
# good: [df0cc57e057f18e44dac8e6c18aba47ab53202f9] Linux 5.16
git bisect start 'v5.17' 'v5.16'
# bad: [22ef12195e13c5ec58320dbf99ef85059a2c0820] Merge tag 'staging-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
git bisect bad 22ef12195e13c5ec58320dbf99ef85059a2c0820
# good: [9bcbf894b6872216ef61faf17248ec234e3db6bc] Merge tag 'media/v5.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
git bisect good 9bcbf894b6872216ef61faf17248ec234e3db6bc
# good: [208dd45d8d050360b46ded439a057bcc7cbf3b09] tcp: tcp_send_challenge_ack delete useless param `skb`
git bisect good 208dd45d8d050360b46ded439a057bcc7cbf3b09
# bad: [c288ea679840de4dee2ce6da5d0f139e3774ad86] Merge tag 'gpio-updates-for-v5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
git bisect bad c288ea679840de4dee2ce6da5d0f139e3774ad86
# bad: [5c947d0dbae8038ec1c8b538891f6475350542ee] Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
git bisect bad 5c947d0dbae8038ec1c8b538891f6475350542ee
# bad: [a229327733b86aa585effdb0d27a87b12aa51597] Merge tag 'printk-for-5.17' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux
git bisect bad a229327733b86aa585effdb0d27a87b12aa51597
# bad: [bca21755b9fc00dbe371994b53389eb5d70b8e72] Merge tag 'acpi-5.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
git bisect bad bca21755b9fc00dbe371994b53389eb5d70b8e72
# bad: [af8fefd7444480bb8fd8d74f977dbac4693ac3ed] Merge branches 'acpi-x86', 'acpi-pmic' and 'acpi-dptf'
git bisect bad af8fefd7444480bb8fd8d74f977dbac4693ac3ed
# good: [b659ea768ae372e2f82c6346120f2e7272a42ac9] Merge branches 'acpi-scan', 'acpi-pm', 'acpi-power' and 'acpi-pci'
git bisect good b659ea768ae372e2f82c6346120f2e7272a42ac9
# bad: [5847d2d2efaab724b7ab374b6fca105e24509c92] Merge branches 'acpi-ec' and 'acpi-processor'
git bisect bad 5847d2d2efaab724b7ab374b6fca105e24509c92
# good: [c793570d8725e44b64dbe466eb8ecda34c5eb8ac] ACPI: EC: Avoid queuing unnecessary work in acpi_ec_submit_event()
git bisect good c793570d8725e44b64dbe466eb8ecda34c5eb8ac
# bad: [8120832d8f82aa7316c578fbccf11e385a5b3601] ACPI: processor: thermal: avoid cpufreq_get_policy()
git bisect bad 8120832d8f82aa7316c578fbccf11e385a5b3601
# good: [0e6078c3c6737df7d0bd0c890fbadf24a27fffbb] ACPI: processor idle: Use swap() instead of open coding it
git bisect good 0e6078c3c6737df7d0bd0c890fbadf24a27fffbb
# bad: [87ebbb8c612b1214f227ebb8f25442c6d163e802] ACPI: processor: idle: Only flush cache on entering C3
git bisect bad 87ebbb8c612b1214f227ebb8f25442c6d163e802
# first bad commit: [87ebbb8c612b1214f227ebb8f25442c6d163e802] ACPI: processor: idle: Only flush cache on entering C3